Senior Smart Contract Engineer

Ether.fi; EUA; Teletrabalho; USD 180 000 - 260 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Token allocation grant

Health, dental, and vision insurance

Travel opportunities

Work from anywhere (4 weeks)

Resumo da oferta

ether.fi is seeking an exceptionally strong Senior Smart Contract Engineer with a security focus to design and build on-chain contracts that protect user assets. You will review critical changes, work with auditors, and shape how we deploy, operate, and monitor our on-chain systems.

You'll influence security practices from day one, collaborate with leadership, and help design robust multisig and timelock structures, upgrade paths, and governance flows across DeFi products.

Qualificações

• Expertise in Solidity and smart contracts for DeFi applications.
• Strong security focus with experience reviewing/auditing contract changes.
• Familiarity with multisig/timelock structures and governance flows.
• Experience with upgradeable contracts and cross-chain messaging.

Responsabilidades

• Design, build, and own safe smart contracts across Stake, Liquid, and Cash with secure access controls.
• Review and audit contract changes before mainnet deployment; serve as reviewer for team.
• Collaborate with external auditors from scoping to verification.
• Improve transaction signing, multisig workflows, timelocks, and verification processes.
• Enhance on-chain operations for upgrades, parameter changes, and fund movements with clear guardrails.
• Develop monitoring/alerting for contract state, privileged actions, oracle behavior, and anomalies; contribute to incident playbooks.
• Drive security practices and help engineers write safer contracts.

Conhecimentos

Solidity

Security-focused

Auditing

Multisig

Timelocks

Governance flows

Upgrade patterns

Cross-chain messaging

DeFi knowledge

Problem solving

AI-assisted review

Descrição da oferta de emprego

About us:

ether.fi is an innovative, rapidly growing crypto-native financial platform on a mission to put users in control of their wealth - making it easy to save, earn, and spend crypto. Positioned as a leading decentralized finance (DeFi) bank, ether.fi offers a fully integrated, non-custodial suite of products - Stake , Liquid , Cash, and Lend - that bridge crypto utility with real-world convenience.

As we continue to scale, we’re actively hiring talented, mission-driven individuals who want to shape the future of finance from the ground up.

Learn more at ether.fi .

Position Overview:

We’re looking for an exceptionally strong Senior Smart Contract Engineer with a security focus. You’ll design and build contracts that protect billions of dollars in user assets, review the changes that matter most, and help shape how we deploy, operate, and monitor our on‑chain systems. You’ll work closely with engineering leadership and have real influence over our security practices from day one.

What You’ll Work On:

• Design, build, and own smart contracts across Stake, Liquid, and Cash, with safety built into the design: limited blast radius, clear access control, and safe upgrade paths
• Review and audit contract changes before they reach mainnet, and serve as a go-to reviewer for the rest of the team
• Work with external auditors from scoping through fix verification
• Help design and improve how we sign transactions, including multisig structure, signer workflows, calldata and transaction hash verification, and timelock usage
• Improve how we run on‑chain operations such as upgrades, parameter changes, role grants, fund movements, and bridges, so each follows a clear, reviewable path
• Build monitoring and alerting for contract state, privileged actions, oracle behavior, and anomalous flows, and contribute to incident response playbooks
• Propose and drive security practices and policies, and help other engineers write safer contracts

You Might Be a Fit If You:

• Led a smart contract team and the dapps operations
• Strong programming & design skill in Solidity
• Built sophisticated DeFi apps from scratch and operated
• Strong fundamentals in software engineering & enjoys problem solvings.
• Obsessed with Security: Care about secure smart contract code, and think deeply about edge cases and failure modes.
• Strong understanding of upgrade patterns, access control, oracle and risks, cross-chain messaging, and common DeFi attack vectors
• Experience operating with multisigs, timelocks, and governance flows in production
• Sound judgment on tradeoffs between safety and shipping speed, and the ability to explain them clearly
• You use AI tools heavily and reliably to review code, investigate issues, and automate operational work

Benefits:

• Competitive salary, performance-based incentives, and token allocation grant
• Health, dental, and vision insurance plans
• Collaborative and inclusive work culture
• Exposure to cutting‑edge technologies in the blockchain and cryptocurrency space
• Global team with opportunity for travel and working out of our 3 offices around the world
• 4 weeks work from anywhere